呕心吐胆
      Explanation: Vomiting: vomiting. Described the painstaking, experienced hardships
      Usage: As the predicate attribute; that best
      Source: Southern Song Liu Yiqing "Shi implicit show": "nausea vomiting bile, less than the poor language; forging fat refining, the Xi can be bitter metaphor?"
  • Thesaurus:  Exert one's utmost effort Lou Bone